add environment_name to nodename template

Author: sjpb

environments/skeleton/{{cookiecutter.environment}}/tofu/control.tf

@@ -3,9 +3,10 @@ locals {
   nodename = templatestring(
     var.cluster_nodename_template,
     {
-      node="control",
-      cluster_name=var.cluster_name,
-      cluster_domain_suffix=var.cluster_domain_suffix
+      node = "control",
+      cluster_name = var.cluster_name,
+      cluster_domain_suffix = var.cluster_domain_suffix,
+      environment_name = basename(var.environment_root)
     }
   )
 }

environments/skeleton/{{cookiecutter.environment}}/tofu/node_group/nodes.tf

@@ -18,9 +18,10 @@ locals {
     for n in var.nodes: n => templatestring(
       var.nodename_template,
       {
-        node=n,
-        cluster_name=var.cluster_name,
-        cluster_domain_suffix=var.cluster_domain_suffix
+        node = n,
+        cluster_name = var.cluster_name,
+        cluster_domain_suffix = var.cluster_domain_suffix,
+        environment_name = basename(var.environment_root)
       }
     )
   }

environments/skeleton/{{cookiecutter.environment}}/tofu/variables.tf

@@ -190,7 +190,8 @@ variable "cluster_nodename_template" {
             $${cluster_domain_suffix}: From var.cluster_domain_suffix
             $${node}: The current entry in the "nodes" parameter for nodes
             defined by var.compute and var.login, or "control" for the control
-            node.
+            node
+            $${environment_name}: The last element of the current environment's path
     EOT
     type = string
     default = "$${cluster_name}-$${node}.$${cluster_name}.$${cluster_domain_suffix}"